The race against time he refers to is as follows...
If for some reason you have a virus or malware specifically engineered to be able to copy your mnemonic or paper wallet...or and private key...then they can literally beat you to sweeping your coins before you do. So why take that chance when you can sign it safely offline first? Especially with a 10btc coin. Better safe than sorry
There are also malwares that send your btc to a different address...they switch the addy at the end.
Gotcha! Thanks Krogoth. I've always wondered about this hence why I kinda set out to learn and continue to learn as software updates and changes came to our world. I want to know and learn as much as I can so I know in the event I have to peel I get what I own. I do need to run some other smaller random tests just so I can really be sure I know what's up etc....Will keep everyone posted if and when I do run some other tests other than a Satori and let the community here know the results step by step!
iBHK8